Release v1.2.8

What's Changed

• Fix Whisper model by @IMvision12 in #400
• Fix snapshot tests by @IMvision12 in #401
• Fix TF SparseTensor issue and pre commit fix by @IMvision12 in #402
• Replace numpy with keras.ops across model code by @IMvision12 in #403
• Add Facebook's Regnet Models by @IMvision12 in #404
• Add Table Transformer by @IMvision12 in #405
• Add Beit models by @IMvision12 in #406
• Add Levit by @IMvision12 in #407
• Move image normalization from models to per-backbone image processors by @IMvision12 in #408
• Update Tests and add sharding by @IMvision12 in #409
• Remove baked default variants: tokenizers/processors now require an explicit repo by @IMvision12 in #410
• Add cross-backend (torch/jax/tf) output parity test by @IMvision12 in #411
• Release 1.2.8 by @IMvision12 in #412

Full Changelog: v1.2.7...v1.2.8